If I'm being honest, I never really saw much of a resemblance between Kidder and Tulloch. Kidder almost always had this slightly haggard look to her even when she was younger, whereas Tulloch is more fresh-faced and attractive imo. There are other obvious differences I won't get into now, but I suppose there's something.
As for Superman, while virtually all of the actors cast in the role bear some likeness to the character (natural or otherwise), none of them are a perfect match for the way I see him in my mind's eye. Having said that, Hoechlin reminds me a lot of the Byrne version.